package net.xiaosaguo.mymall.member.exception;

/**
 * description: 用户名已存在异常
 *
 * @author xiaosaguo
 * @date 2020/07/05
 */
public class UsernameExistException extends RuntimeException {
    public UsernameExistException() {
        super("用户名已存在");
    }
}
